Question

Which one of the following is a bacterial herbicide?

• A. Alternaria crassa
• B. Xanthomonas sp.
• C. Fusarium sp.
• D. Bacillus thuringiensis

Hint:

Xanthomonas species are used as biological herbicides to inhibit the growth of certain plants.

Answer 1

The Correct Option is B

Step 1: Understanding bacterial herbicides.
Bacterial herbicides are used to control unwanted plant growth. Some species of bacteria, such as Xanthomonas, produce substances that inhibit plant growth and are used in biological control.
Step 2: Analyzing the options.
(A) Alternaria crassa: Incorrect — Alternaria crassa is a fungus, not a bacterium.
(B) Xanthomonas sp.: Correct — Xanthomonas species are bacteria that can act as biological herbicides.
(C) Fusarium sp.: Incorrect — Fusarium is a genus of fungi, not a bacterium.
(D) Bacillus thuringiensis: Incorrect — Bacillus thuringiensis is a bacterium used as an insecticide, not a herbicide.
Step 3: Conclusion.
The correct answer is (B) Xanthomonas sp., as it is a bacterial herbicide.